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I don't believe in changing the unchangeable.

There certainly have been a lot of changes, although they come in such gradations that most people have either forgotten, or, if they're too young, they never knew about them in the first place.

Change is not only likely, it's inevitable.

Change is good. And in fact unavoidable.

All change is bad. But sometimes it has to be done.

Well, the first thing to say is that we've worked hard to maintain compatibility, so that any program written with an earlier version of Mathematica can run without change in 3.0, and any notebook can be converted.

Nobody is in the process of making any changes that we can be specific about.

Everybody who runs a Web site knows we're not assured of compatibility, and we could end up with a split.